Filling machine



Dec. 7, 1937. J. G. F. AUGUSTIN FILLING MACHINE Filed Dec. '25, 1955TxD-.frese mm1 3 Sheets-Sheet l nventor Gnou g Dec. 7, 1937. J. G. F.AUGUSTIN FILLING MACHINE Filed Dec. 23, 1935 3 Sheets-Sheet 2 Dec. 7,1937.

.l. G. F. AUGUSTIN FILLING MACHINE Filed Deo. 23, 1955 s sheets-sheet s,

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Grt mcg Patenten ver.. 7, 1937 UNITED STATES PATENT (')FFICE 2,101,23zFILLING MACHINE Johann Georg Ferdinand Augustin, Krefeld, Germany,assignor to Verpackungsbedarf G. m. b. H., Krefeld, Germany ApplicationDecember 23, 1935, Serial No. 55,912

In Germany January 13, 1934 4 claims. (C1. 249-461) The presentinvention relates to lling mamaterial is adapted to be placed and whichis to chines, and more particularly to that type of mabe filled intobags or other receptacles. The hopchine wherein quantities of materialare weighed per I may have a spreader II therein, and at and aresubsequently delivered into bags or the its lower end is provided with areduced neck I2 like. which extends downwardly and is adapted to be 5 Anobject of the present invention is to provide closed at times by a pairof segmental valves or certain improvements in iilling machines of thisgates I3 and I4- These gates are provided at character wherein thedevices for delivering the opposite sides with pivot arms mounted on amaterial into bags or the like, and for supporting shaft I5 which may becarried at one side of the l0 the latter, are mounted on a weighingapparatus neck I2 and the valves I3 and I4 are concentricaland whereinall of the connecting parts between ly mounted so that the valve I4 mayswing in the filling and weighing apparatus and devices overlappingrelation over the valve I3. and the stationary portion are iiexible soas not The neck I2 extends down through a suitably to interfere with thebalancing of the weighing constructed frame I6 and the latter carries aapparatus. casing or housing I'I which encloses the neck I2 ll An objectof the present invention is to provide and its valves I3 and I4. Beneaththe neck I2 is improved means for gradually cutting-off or tadisposed aweighing and delivering mechanism` pering the flow of the material fromthe supply the same having a weighing hopper I8 opening hopper to theweighing hopper as the weight of upwardly beneath the neck I2 andsubstantially the supplied material approaches a predetersealed to thelower end of the housing I'I by a gg mined amount, and for automaticallyoperating flexible ring or cover I9 which admits the free the variousmechanisms for insuring correct rise and fall of the hopper I8independently of amounts of the material to be fed to each bag or theneck I2 and housing I1. The hopper I8 is of to the receptacle.suiiicient size, as is also the housing I1 to admit 125 A further objectof the invention is to provide the swinging of the valves I3 and I4 intoand an improved counter-balancing means for obout of position across thelower end of the taining a fine adjustment of the weighing mechneck I2.anism, and to further provide improved'means The hopper I8 is secured atits lower end to an for eiecting a positive or force feed of themaimpeller casing 20 which communicates with the a0 terial through theweighing mechanism to the hopper and is provided interiorly with arotary 1; receptacle to be filled. impeller 2| for forcing materialdownwardly from With the foregoing and other objects in view, the hopperI8 through the casing 20 and out the invention will be more fullydescribed hereinthrough a delivery nozzle 22. The impeller 2| is after,and will be more particularly pointed out connected directly to anelectric motor 23 which in the claims appended hereto. has its housingsecured to the impeller casing 2U In the drawings, wherein like symbolsrefer to and is supported as a unit therewith, the motor like orcorresponding parts throughout the sev- '23 having current supply wires24 suitably coiled eral views: f or otherwise exibly disposed betweenthe motor Figure .1 is a side elevation, partly in section of 23 and thefixed frame I6. The delivery spout or 4o a filling machine, having a bagmounted thereon nozzle 22 is provided at its inner end with a re- 4o andin position of feeding material to the weighceptacle corner receivinghood 25 suitably reins' hODDer. cessed at its forward side to receive acorner of Figure2 is a front elevation of the same. a bag, as shown inFigure 1, and which is pro- Figure 3 is a fragmentary enlarged sectionalvided with a combined air and dust receiving view taken through theupper portion of Figure 1. conduit 26 which may lead to any suitablepoint f Figure 4 is a side elevation of the same; of discharge and whichextends downwardly Figure 5 is a front elevation partly in section fromthe hood 25. The receptacle may be applied of a slightly modliied formof lling machine, and to the nozzle 22, and supported therebeneath inFigure 6 is a detail elevation of the material any suitable manner. Forinstance, the recepforce feeding machine of Figure 5, the view beingtacle, shown at 21 in dotted lines, may be of the taken axially at rightangles to the lower portion type having a nozzle aperture at one cornersc of Figure 5. that the receptacle may receive the nozzle in il:Referring now to the drawings, and iirst to conaperture and bear acrossthe upper side of thf struction shown in Figures 1 to 4, In designatesnozzle with the open corner of the bag or other a supply hopper in whichpulverized or granulated receptacle projecting into the hood 25. The upper end of the bag is held to the nozzle by means of a presser block 28mounted on the lower end or a hinged arm 23 which is carried upon aprojection 35 of the impeller casing Ztl. A hand lever 3l is pivotednear its lower end on the projection 3i) opposite the' block 2d and thearm 2Q and the lower end ofV the lever 3l are provided withinter-locking hooks adapted for inter-engagement when the upper end ofthe lever 3i is swung downwardly and outwardly from the apparatus. Thehooks thus connect the lever 3i to the arm 2Q and the latter is raisedby the action of the lever to release the block 23 from the bag. Thelower end of the lever 3i is of suilcient length to bear against theblock 23 when the lever 3i is raised to clamp the bag on the nozzle.

Extending downwardly from the impeller cas- Iing 2li is a bracket 32which may comprise a pair of spaced apart parallel straps secured by acrossbar 33 at the lower endsV and which support a horizontally extendedbracket arm 3d adapted for adjustment by a pin and aperture connectionto the desired height upon a bracket for accommodating receptacles orbags 21 of different dimensions. The bracket arm 3d pivotally carries aseat or rest 35 which is normally inclined to receive the lowerv outercorner'of the bag or receptacle, as shown in Figure 1, and which isadapted to tilt with the receptacle during its movement on the bracketsupport.

The hopper I 8, at the upper end of the weighing device, is connected bythe usual knife edge connections 36 to the outer end of a scale beam 31,and the scale beam may comprise a pair of` bearing 42`disposed a slightdistance beneath the e lower end portions of levers 43 and 44, so thatwhen the weight rises by the tilting or the scale beam 31 rst the lever43 is raised and later the lever 44 is raised.

The levers 43 and 44 are mounted on the pivot 45 of the frame I6 and are-provided with downwardly and forwardly curved arms 46 and 41 which haveshoulders-48 thereon facing the respective arcuate valves I3 and I4 andwhich engage the free ends of arms 43 and 50 carried by the valves I3and I4 respectively. 'I'he shoulders 48 hold the arms 49 and 58 andtheir valves I3 and I4 in open position and the shoulders are releasedfrom the argxis by theiraising..ofr the levers 43 and 44. Thfinner valveI3 isprovided at its lower or forward edge with an a v"'-,hure 5I ofsumcient size to admit of the anal feaing of the material down into theweighing hopper I8 after the bulk of the material is in the hopper andthe load has been practically measured. `A second valve or gate I4 isadapted to be released finally to swing down and close the opening 5I(The arms 46 vand 41 may be counterbalanced by a weight 52 pivoted on theframe at 45 and y y weighing th material, a second scale beam 55 bearingat 51 upcn the scale pan 39, while its other end carries a graduatedscale and an adjustable weight 5S operable with respect to the scale forobtaining the desired counterbalance.

The filling machine is adapted for use with various kinds of materialscapable of being lled into receptacles or bags and is particularlyadapt= ed for handling material which in bulk is sensitive to slightvariations in weight, such as grain,

coiec beans, and the like, and materials which may be easily broken inhandling as the mechansm of this invention ls'particularly adapted topreserve the original shape and condition of the material withoutrough'handling or undue jarring thereof.

The material passes from the hopper it down through the neck I2 into theweight hopper i8, and isfed downwardly from the latter through thecasing2@ by the impeller 2i. The impeller 2i moves the material at a desiredrate of flow through the weighing apparatus and through the nozzle 22into the bag or other receptacle. As the material is fed down throughthe hopper I8 and receptacle 21 the weight of the material is increasedon the/outer end of the scale beam 31 and, as the scalebeam iscounterbalanced, the

' rod 4I is raised so that as the full load is appreached the firstlever 43 is lifted sufficiently to release its locking shoulder 48 andfree the inner valveri3. The remainder of the load is obtained by ow ofthe material through apertureV 5I until the final load is obtainedwhenthe second lever 44 is raised and the second valve .I4 is tripped sothat it falls into closed position to shut off the ow through theaperture 5I.

'I'he valves I3 and I4 are provided with levers 58. and whichareconnected by suitable shafts or rods to the valves I3 and, I4 forswinging the latter into their open positions when starting theoperation of the lling mechanism.

In the modication shown in Figures 5 and 6, the hopper 6I may berelatively had for handling a large quantity of material, and in thiscase the hopper .is provided in its bottom with a rotary impeller orfeeder 6I of the centrifugal type,

which is connected by bevel gears B2 to a drive Cil shaft 63 adapted tobe driven by a. belt or the like through a pulley 64. The material fromthe impeller 6I is fed through one side of the bottom of the hopper 66into a channel 6 5 from which the neck I2 extends, and which is fullydisclosed in connection with vthe preferred form. A The remainingportions of the apparatus are as brought out in the preferred 'structureabove described 'with the exception that the impeller' provide aconnection fora supporting bracketv 12 upon which the bag 10 may rest.

In both forms of the invention the vertical hanging weighing devices,including the hopper/ I8 and the impeller are maintained insubstantially verticalposition at all times by one or more links 13which 'are pivoted at one end to the lower 1 end of the frame I6 and atits other end'to the motor 1I, in the modiiiedform, and to the bot'*tomportion of" the casing 23 in lpreferred form.

The bracket -12 is provided with a bag holder lladjustably mounted, asshown in Figures 5 and 6, and which may have a pair of upwardlydiverging wings between which the bottom of the receptacle or bag isseated. This holder 14 is mounted on a hinge 15 carried by the bracket12 so that the holder 'I4 may tilt or swing outwardly with. the bag l0as it is withdrawn from the machine.

It is obvious that various changes and modifications may be made in thedetails of construction and design of the above specifically describedembodiment 'of this invention without departing from the spirit thereof,such changes and modifications being restricted only by theI scope ofthe following claims.

What is claimed is:

1. In a machine for filling bags and similar receptacles, a supportingframe, a storage bin secured to said frame and having a discharge mouth,a balance bearing arranged at said frame, a scale beam resting in saidbalance bearing, a feeding hopper suspended from one end of said scalebeam, rotary impelling means having an electric motor arranged at saidfeeding hopper,

flexible means for connecting said feeding hop' per and said electricmotor to said frame, means for supporting the lling receptacle, saidmeans including a tube tapering from said feeding hopper, clamping meanssupported above said tube for clamping the receptacle onto said tube,pins secured to said feeding hopper and secured to said frame, and linksengaging said pins for forming parallel guides adapted to prevent thefeeding hopper from, swinging.

2. In a lling machine for bags and the like, having a frame, a feedinghopper with an open bottom for the discharge of material therefrom,valve mechanism for said open bottom, and means for supporting saidfeeding hopper. to the frame, the combination of a weighing hopperhaving top and bottom openings for receiving and discharging material,and guide means supported by the weighing hopper for guiding materialdischarged by the weighing hopper to the bag to be filled, with abalanced bearing supported by the frame, a scale beam supported on saidbalanced bearing,'knife edge connections on the weighing hopper engagingone end of said scale beam, a weight on the other end of th-e scalebeam, said weight counterbalancing the Weight of the weighing hopper,guide means, and the amount of desired material in the weighing hopper,and means operated by the weight end of the scale beam for closing thedischarge opening of said feeding hopper by said valve mechanism,whereby an excess of the desired contents in the weighing hopper causesinterruption of further supply of material to the weighing hopper.

3. In a lling machine for bags and the like having a frame, a feedinghopper with an open bo-ttom for the discharge of material, valvemechanism for said open bottom, and means for supporting said feedinghopper and valve mechanism to the frame, the combination of a weighinghopper having top and bottom openings for receiving and dischargingmaterial, guide means supported by the weighing hopper for guidingmaterial discharged by the weighing hopper to the bag to be filled, witha balanced bearing supported by the frame, a scale beam supported onsaid balanced bearing, knife-edge connections on the weighing hopperengaging one end of said scale beam, a weight on the other end of thescale beam, said weight counterbalancing the weight of the weighinghopper, guide means, and amount of desired contents in the weighinghopper, means operated by the weight-end of the scale beam for closingthe discharge opening of said feeding hopper, an

.impeller in said guide means adapted to move the weighed charge intothe bag, and a motor for operating said impeller, said impeller andmotor being supported by said weighing hopper and being unsupported bythe frame save by said scale beam connection, whereby an excess of thedesired contents in the weighing hopper causes interruption oi furthersupply of material to the weighing hopper, and whereby the weighedcontents of the weighing hopper without further excessmaterial isimpelled by the impeller into the bag.

4. Ina lling machine for bags and the like having a frame, a feedinghopper with an open bottom for the discharge of material, valvemechanism for said open bottom including a Valve for closing thedischarge opening provided with an opening therein, a second valveacting on the opening of the first valve to permit only small amounts topass when said opening is uncovered. means for supporting said feedinghopper and valve mechanism on the frame, the combination of a Vweighinghopper having top and bottom openings for receiving and dischargingmaterial, and guide means supported by the weighing hopper for guidingmaterial discharged by the weighing hopper to the bag to be filled, witha balanced bearing supported by the frame, a scale beam supported onsaid balanced bearing, knife edge connections on the weighing hopper andengaging one end of said scale beam, a weight on the other end of thescale beam, said weight counterbalancing the weight of the weighinghopper, guide means, and amount of desired contents in the weighinghopper, means operated by the weightend of the scale beam for closingthe discharge opening of said feeding hopper, rst by the first valve butpermitting passage of small quantities through the opening of the firstvalve and then closing said opening by the second valve, a weightsupport provided with a weight thereon, knife edge connections on saidweight support connecting with said scale beam, a second balancedbearing on said frame, a second scale beam on -said balanced bearing,one end of said second scale beam being connected with the weightsupport of the first scale beam, and a weight on the other end of thesecond scale beam by which additional adjustment of the first scale beamis provided, and whereby as the result of the successive operation ofthe valves 4and the knife-edge connections an accurate weighing of thedesired contents to be discharged, is obtained.

JOHANN GEORG FERDINAND AUGUSTIN.

